Imaginary Picture of HD 185269 b
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Exoplanet Name : HD 185269 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.9400 (Mjup) 298.8617 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0770 (AU) 0.0770 (AU Est.)
Eccentricity : 0.3000
Orbital Period(Yrs) 0.0187
Orbital Period(Observed/Estimated) 6.84 (Days Obs.) 6.90 (Days Est.)
Star Radiation at Atmospheric Boundary: 934854.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1387.8 (K)
Blackbody T 0.3(K) 1303.3 (K)
Blackbody T 0.7(K) 1054.5 (K)
Tidally Locked Blackbody T 0.1(K) 1650.4 (K)
Tidally Locked Blackbody T 0.3(K) 1549.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 185269
Alternate Name :
Star Distance(LY) : 170.8
Stellar Radius(Rsun) : 1.9 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 4.2 (GY)
Temperature : 5980 (K)
Spectral type : G0IV
Metalicity : 0.1
Absolute Magnitude: 3.1
Apparent Magnitude: 6.7
Right Ascension(RA) 294.2989
Declination (DEC) 28.5000
Hubble Space Telescope Guide Star Catalog (GSC) ID 02150-05013
Discovered by
Discovery Paper - Authors "Johnson,ohnsher; Marcy,eoffrey.; Fischer,ebra.; Henry,regory.; Wright,ason.; Isaacson,oward; McCarthy,hris"
Discovery Paper - Title An Eccentric Hot Jupiter Orbiting the Subgiant HD 185269
Discovery Paper - Journal "The Astrophysical Journal, Volume 652, Number 2"
Discovery Paper - URL http://iopscience.iop.org/article/10.1086/508255/meta
SIMBAD LINK http://simbad.harvard.edu/simbad/sim-basic?Ident=HD+185269+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20185269%20b/
HD 185269 b
HD 185269 b

  • HD 185269 b is an exoplanet orbiting the star HD 185269, located about 170.8 light-years (52.4 pc) away from Solar System. Its discovery was publicly announced on 2006.
  • The host star HD 185269 has apparent magnitude of 6.7, with absolute magnitude of 3.1.
  • It is 1.3 times more massive and 1.9 times bigger compared with our Sun. The surface temperature is 5980 with its spectral types of G0IV
  • In this planetary system, the extrasolar planet HD 185269 b orbits around the star HD 185269 every 6.8 days with its orbital distance of 0.08 AU ( 11519036.0 km)
  • (Projected orbit of HD 185269 b around its host star HD 185269)


  • The Star HD 185269 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.456 AU ( 217880483.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.013 AU ( 301167766.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.068 AU ( 458913028.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.514 AU ( 675310624.7 km)
  • Radiation at Planetary Boundary of HD 185269 b : 934854.01 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 185269)



  • Kopparapu Recent Venus for Star HD 185269 distance : 1.491 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 185269 distance : 1.888 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 185269 distance : 1.824 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 185269 distance : 1.999 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 185269 distance : 3.318 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 185269 distance : 3.499 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 185269)



  • Original Kopparapu Recent Venus for Star HD 185269 distance : 1.499 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 185269 distance : 1.939 AU
  • Original Kopparapu Moist Greenhouse for Star HD 185269 distance : 1.984 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 185269 distance : 3.377 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 185269 distance : 3.512 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 185269)



    (Position in Stellar Map of star HD 185269 and its Exoplanet HD 185269 b)



    (Zoomed position in Stellar Map of star HD 185269 and its Exoplanet HD 185269 b (zoom level 3))